Stereoscope-plate changer.



E. W. KELLY.

STEREOSOOPE PLATE CHANGER.

APPLICATION FILED AUG.1,1910.

998,618. Patented July 25,1911.

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@md/ ATTORNEY E. W. KELLY.

'S'IEREOSCOPE PLATE CHANGER.

APPLICATION FILED AUG.1, 1910.

998,618, Patented July 25,1911.

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EDWIN W. KELLY, OF PHILADELPHIA, PENNSYLVANIA.

STEREOSCOPE-PLATE CHANGER.

To all whom it may concern:

Be lirkl'lOVIl that I, EDWIN WV. KELLY, a citizen of the United States, residing at Philadelphia, in tile county of Philadelphia and State of Pennsylvania, have invented a new and useful Stereoscope-Plate Changer, of which the following is a specification.

My invention relates to 'means for shifting or changing radiographic or photographic plates, whereby successive exposures may be quickly made, as, for example, in

stereoscopic X-ray examinations.

My invention'resides in a plurality of plate holders, preferably secured together, and a frame or tunnel member therefor,

means being provided for autormitically tom plan view, on larger scale, of a portion.

pf theapparatus shown in Fig. 1. Fig. 3 is a fragmentary plan view of a plate holder.

- Fig. 4 is a transverse sectional view through a part of the frame or tunnel and the plate changing. or' shifting mechanism, taken on line AA, Fig. 2. Fig. 5 is a fragmentary longitudinal sectional view through a part of the plate changing or shifting mechanism. Fig. 6 is a fragmentary transverse sectional view taken on the line BB, Fig. 1.

Referring to Fig. l, the frame or tunnel member is shown in top lan view, and com prises the side members-l, 1, referably of metallic tubing, as seen in Figs. 4 and 6. At theirends they-are secured together by the cross pieces 2, 2, and intermediate cross pieces 3, 3 are provided. The top face of the frame oriunn'el member is divided into three sections, when two plate holders, hereinafter referred to, are employed. The end sections 4 and 5 are of sheet iron or steel, or other material opaque to X-rays or other radiations employed, while the middle panel or section 6 is of sheet aluminum, or other material translucent or transparent to X-rays or the other radiations employed. ll'hesc sheets are secured to the sidetubular Specification of Letters Patent.

Application filed August 1, 1910.

, Patented July 25, 1911..

Serial No. 575.000.

'Tnembers l by screws, rivets, or any other suitable means, as 7, the middle panel (3 of aluminum extending practically half way :round the tubular member 1, as shown-in Fig. 6.

At the four corners of the frame or tunnel member and on its under side, as viewed in Fig. 2, are provided feet 8.

The frame or tunnel member is open to receive a plurality of plate holders, as 9 rnd 10, Fig. 2. These plate holders may be secured to each other, as by hinges 11, whereby they maybe folded back to back :1n(l carried by handle 19.. These plate holders are adapted to receive a photographic or radiographic plate and have hacks of material opaque to ordinary light and the covers 13,hinged to the plateholders Pt 14 also of material opaque to ordinary tight. Either the back or the cover of each plate holder must be of material translucent r transparent to X-rays or other radiations :tsed. ()n the plate holder frames are provided clips 15 which may be moved over on top of the cover 13 to hold the same in 'llttCG. Each plate holder is provided with :rplurality of rollers won one 1 side thereof, the same engaging in the channels 17 extending along the inside edges of the frame or tunnel and acting as guides .01- tracks for he plate holders. The plate holders may then roll when the frame or tunnel and the plate holders are lying flatwise upon these rollers 16 in the channels 17, If, however, the frame or tunnel and the plate holders are moved to edgewise osition, the plate holders then roll upon r0 ers 18, in one side only of the plate holders, such rollers engaging in this case in the bottoms of the channels 17 The ivot'al axes of the rollers 16 and 18 areat-rightangles to each other, as seen in Fig. 3.

Extending along one side of the frame or tunnel member is a tube 19 secured at its ends at20,21,to the frame or tunnelmember and at its center stehdi'dby the strap see Fig.6, surrounding the tube 19 and secured by screws 7 to the tubular member 1. Within the tube 19 is the longitudinally movable rod 23 carrying at its left end. Figs. 1 and 2, a' piston or plunger 2-! fitting 'snugl within the tube 19'and ada ited to he 'retarc ed in-th -movementtower the lt-l'l, Figs. 1 and 2, of the rod 23, the air escaping from the tube lilfiwhieh is elosedat its left end, Fig-Lulhrotmh' a series of'suitably ditherewith, are retarded and come to rest without jar. Approximate its other end the rod 23 carries a head 26 fitting loosely within the tube 19 and serving as a guide for said rod,

the member 26 .carrying at its lower end,

l ig'. 5, a flanged or mushroom member 27 adapted to be engaged by the latch 28 pivoted at 29 upon the tube 19, and engaged'by spring 30, carried by the tube 19, urging the latch 28 to the position shown in Fig. 5 to catch the member 27. The latch 28 has .a tail 31 to which is connected a string, or cord, or other member 32 extending through the opening 33 in the tube 19. A spiral spring 34 surrounds the rod 23, within the tube 19, .and is connected at it's one end to the rod 23 and at its other end to the bushing 23 which serves also to guide rod 23. \Vhen the rod 23 has been moved to the position shown in Fig. 5, where the latch 28 engages member 27, the spring 34 is under tension and so locked by the latch 28.

Upon one of the plate holders, as 9, there is cured a member 35 notched at 36 to receive the transversely movable member 37 having the grip or handle 38, whereby it may be pulled upwardly, Fig. 2, or toward the right, Fig. 4, in opposition to spring 39, secured at its one end to the member 37 and at its other end upon the member 40, having the handle 41 and the projection 42 adapted to partially embrace one of the channels 17 to guide the moving parts with respect thereto. The tube 19is longitudinally slotted at 43, see Fig. 2, and through the slot 2 extends a projection 44 upon the member 40,

The spring 34 has previously been under tension by moving the handle 41,

which is secured by screw. 45 to the member 26 which, as before stated, is secured upon rod 23. I

T he member 37 is carried by the member 40, being transversely movable, as before stated, the member 37 being transversely movable in the ,members' 37 carried by the member 40.

The operation is as follows: The X-ray tube is placed above panel 6, as viewed in Fig. 1, andthe plate holders are beneath the panels 5 and 6. .lVhen the plate holders, as

9 and 10, have been properly loaded with v sensitized plates and their covers replaced to exclude daylight or ordinary light, they may be carried out of a dark room by handle 12 to the frame or tunnel member. The plate holders are then swung upon their hinges 11 as they are passed into'the frame or tunnel from the right. as viewed in Figs. 1 and 2. put

upon member 40,. toward; the right, as viewed in Fig. 1, the latch 28 engaging the member 27 to hold the rod 23 under such spring tension, the cam. surface. 35

iiaving forced back member 37 as plate holders were inserted, and 37 automatir'ally snaps into notch 36 when the plate holders are in proper position. The plate holders 9 and 10 are thus mechanically .con-

nected to the movable member 40 which is, in turn, mechanically connected to the rod :53. When in this position, the left-hand plate holder, as 10, Fig. 2, is under orregisters with the panel 6 which, as aforesaid, is translucent or transparent to the X-rays or other radiations to be employed. Exposure is then made in the well knownmanner by exciting the X-ray tube or other source of radiations; For sterescopic work "the X-ray tube is then moved a short distance, for example, 2-3 inches, the average distance between human eyes. Then the operator pulls the strings32 which releases the member 27, and therefore the rod 23, from latch 28,v whereupon spring 34 contracts and forces the rod 23 toward the left, as viewed in Fig. 2, which, through the medium of members 40, 37 and 35, moves the plate holders 9 and 10 'toward the left, as viewed in Fig. 1, the extent of travel being the distance between centers of the two plates to' bring the right-hand plate holder 9, Fig. 2, into position beneath the panel 6, while the previously exposed plate in holder 10 is now beneath the left-hand panel 4, Fig. 1, which is opaque to X-rays. And before this movement of the plate holders toward the left, the plate in the right-hand holder 9, Fig. 2, was beneath opaque panel 5, shielding itduring the exposure of the first plate.

This movement toward the left is retarded as aforesaid by the plunger or piston 24, which is cushioned b the same, Figs. 1 and 2, withinthe tube 19, the air escaping gradually or at desired rate from the progressively smaller apertures 25. lVhen the parts have come'to rest .in this new position, the second exposure issmade. Then the parts are returned to original latched position and then the grip 38 is pulled outwardly to remove detent 37 from notch 36, whereupon the plate holders may be lifted out of'the frameor tunnel member by handle 12 and carried to a dark room for development.

What I claim is:

1. In apparatus for purposes of stereosthe air tothe left of copy described, the combination with a frame, of a plurality of separate plate holders translucent to X-rays and opaque to ordinarynlight. movable with each other upon said frame, said frame having different panels opaque and translucent to X-rays, and an automatic motive device carried by said frame for moving said plate holders with respect to a translucent panels 2. In apparatus for purposes of stereoscopy described, the combination with a frame, of a plurality of separate plate holders ltranslucent to X-rays and opaque to orframe, of a plurality of separate plate holders translucent to X-rays and opaque to ordinary light movable with each other upon said frame, said frame having different panels opaque and translucent to X-rays, an

automatic motive device carried'by said frame for moving said plate holders with respect to a translucent panel, and means for lockingsaid automatic motive device against actuation.

4:. In apparatus for purposes of stereoscopy described, the combination with a frame, of a plurality of separate plate holdcrs translucent to X-rays and opaque to ordinary light movable with each other upon said frame, said frame having different panels opaque and translucent to X rays, an automatic motive devi'ce carried by said frame for moving said plate holders with respect to a translucent panel, and a disengageablecmechanical connection between said automatic motive device and said plate holders. 7

5. In apparatus for purposes of stereoscopy described, the combination with a frame, of a plurality of separate plate holders translucent to X-rays and opaque to ordinary light movable with each other upon said frame, said frame having different panels opaque and translucent to Xmays, an

automatic motive device carried by said frame for movingsaid plate holders with respect to a translucent panel, a disengageable mechanical connection between said automatic motive device and said plate holders, and means for locking said automatic motive device against actuation.

6. In apparatus for purposes of stereoscopy describeththe combination with a frame, of a plurality of separate plate holders hinged together and movable in substantially the same plane with each other upon said frame, said plate holders being opaque to ordinary light and translucent to X-rays, said frame having different panels opaque and translucent to X-rays, and an automatic motive device upon said frame for xn'oving said plate holders with respect o a translucentpanel.

7. In apparatus for purposes of stereoscopy described. the combination with a frame. of a plurality of separate plate holders translucent to X'rays and opaque to ordinary light movable with each other upon said frame, said frame having differ ent panels opaque and translucentto X-rays, an automatic motive device carried by said frame for moving said plate holders with respect to a translucentpanel, and means for retarding the movement of said plate holders.

8. In apparatus for purposes of stereoscopy described, the combination with a. frame, of a plurality of separate plate holders translucent to X-rays and opaque to ordinary light movable with each other upon said frame, said frame having different panels opaque and translucent to X-rays, an automatic motive device carried by said frame for moving said plate holders with respect to a translucent panel, and a disengageable latching connection between said plate holders and said automatic motive device.

9. In apparatus. for purposes of stereoscopy described, the combination with a frame, of a plate holder opaque to ordinary light and translucent to X-rays, said'frame having panels translucent and opaque to X- rays, an automatic motive device carried by said frame for shifting said plate holder with respect to a translucent panel, a member carried by said automatic motive ,device adapted to en age said plate holder,

ing said member upon insertion of said plate holder into said frame.

10. In apparatus for purposes of stereocopy described, the combination with a frame, of a plurality of separate plate holders translucent to X-rays and opaque to ordinary light movable with each other upon said frame, said frame having different panels opaque and translucent. to X-rays, an automatic motive device :arricd by said frame for moving said .plate' holders with respect to a translucent panel, and means for progressively retarding the movement of -said plate holders.

11. In apparatus for purposes of stereoscopy described. the combination with a frame, of a plurality of separate plate holders translucent to X-rays and opaque to ordinary light movable with each other upon said frame, said frame having different panels opaque and translucent to X-ra v s, an automatic motive device carried by said respect to a translucent panel, said automatic motive device comprising a tube secured upon said frame, a member movable within said tube, and a spring associated with said tube for moving said nuunher.

12. In apparatus for purposes of stereoscopy described. the combimltion with a frame, of a plurality of separate plate holders translucent to X rays and opaque to ordinary light movable with each other upon said frame, said frame having different panels opaque and translucent fox-rays,

and means on said pate holder for actuat frame for moving said plate holders with an automatic motive device carriedby said frame for moving said plate holders with respect to a translucent panel,'said automatic motive device comprisin cured upon said frame, a mem er movable within said tube, and a spring associated with said tube for moving said member, means'for connecting said plate holders with said member, and means for restraining said spring.

13. In apparatus for purposes of stereos with said member, means for restraining, said spring, and means for actuating said.

last mentioned means for spring.

14. In apparatus for purposes of stereoscopy described. the combination with a frame, of a plurality of separate plate holders translucent'to X-rays and opaque to ordinary light movable with-each other upon said frame, said frame having different panels opaque and translucent to X-rays, an automatic motive device carried by said frame for moving said'plate holders with respect to a translucent panel, said automatic motive device eon'iprising a tube sereleasing said cured upon said frame, a member movable within said tube, and a spring associated with said tube for moving said member, andmeans for restrammg the movement of said plate holders.

1:"). In apparatus for purposes of stereos-.

copy described,'the combination with a frame, of a plurality of separate plate holders translucent to X-rays and opaque to ordinary light n'iovable with each other upon said frame, said frame having differ" ent panels opaque and translucent to X-rays,

an automatic motive device carried by said frame for moving said plate holders with -respect to atranslucent panel, said automatic motive device comprising a' tube se-Q cured upon said frame, a member movable.

. within said tube, and a spring'associatcd with said tube for moving said member, and means for retarding said plate holders comprising a plunger movable in said tube.

1,6. in apparatus for purposes of stereoscopy described, the combination with frame, of .a plurality 'of separate plate holders translucent. to X-raysand opaque atube se-' to ordinary lightmoVablewith each other upon sald frame, said frame having differ- .ent panels opaque and translucent to X-rays,

cured upon said frame, a-member movable within said tube, and a spring associated with said tube for moving said mem her, and means for retarding said plate holders comprisng a plunger movable in said tube, said tube havinga plurality of perforations disposed at-difl'erent positions longitudinally thereof.

I]. In apparatus for purposes of stereoscopy described, the combination with a frame, of 'a plurality of separate plateholders translucent to X-rays and opaque to ordinary light movable with each other upon said frame, said frame having ditferent panels opaque and translucent to X-rays, an automatic motive device carried by said frame for moving said plate holders with respect to a translucent panel, said automatic motive device comprising a-tube se cured upon said frame, a member movable within said tube, and a spring associated with said tube formoving said member, and means for retarding said plate holders eomprisng a plunger movable in said tube, said tube having a plurality of perforations disposed at different positions longitudinally thereof, saidperforations diminishing in size in the direction of movementof said plunger. 7

1 8. In apparatus for purposes of stereoscopy described,- the combination with a frame, of a pluralit of separate plate holders translucentto i -rays and opaque to.

ordinary light movable with each other'upon said frame, said frame having differentw panels opaque and translucent to X-rays, an

automatic motive device carried by said frame for moving said plate holders, with respect to a translucent panel, and rollerson said plate holders having their axes at angles to each other, the differently disposed rollers adapted to engage said frame according to the position of said frame. v i

19. In apparatus for purposes of stereos copy described, the.. .c0mbination with a frame, of a plu'ality of separate plate holders translucent to X-rays and opaque to ordinary light movable with each other upon said frame, said frame having ditlerent panels opaque and translucent to X-rays, an automatic motive device carried by said frame for' moving said plate holders with respect to a translucent panel, channel mem-.

bers supported by said frame. and rollers on said plate-holders having their axes at angles with respect to each other adapted to engage the'ditferent surfaces of said channel members according to the position of said frame.

20. In apparatus for purposes of stereoscopy described, the combination with a frame, of a. plurality of separate plate holders translucent to X-rays and opaque to ordinary light movable witheach other upon said frame, said frame having different panels opaque and translucent to X-rays, an automatic motive device carried by said frame for moving said plate holders with respect to a translucent panel, said automatic motive device comprising a tube secured upon said frame,a member movable within said tube, and a spring associatet l with said tube for moving said member, and a latch within said tube for restraining said member.

21. In apparatus for purposes of stereoscopy described, the combination with a frame, of a plurality of separate plate holders translucent to X-rays and opaque to ordinary light movable with each other upon said frame, said frame having different panels opaque and translucent to X-"ays, an automatic motive device carried by said frame for moving said plate holders with respect to a translucent panel, a notched member upon one of said plate holders, and a sliding member carried by the movablemember of said motive device adapted to engage in the notch of said notched member.

22. In apparatus for purposes of stereoscopy described, the combination with a frame, of a plurality of separate plate holders translucent to )Zrays and opaque to ordinary light movable with each other upon said frame, -said frame having different panels opaque and translucent to Xmays, an automatic motive device carried by said frame for moving said plate holders with respect to a translucent panel, a notched member upon one of said plate holders, a sliding .member carried by the movable member of said motive device adapted to engage in the notch of said notched member, and an inclined surface on said notched member adapted to actuate said sliding member upon the insertion of said plate holders in said frame.

In apparatus for purposes of stereos copy described, the combination with' a frame, of a plate holder supported thereby and movable with respect thereto, said plate holder having a side opaque to ordinary light and translucent. to X-rays, said frame having panels opaque and translir cent to X-rays, an automatic motive device carried by said frame for moving said plate holder' with respect to a translucent panel comprising a tube disposed longitudinally of said frame and a power actuated member disposed within said tube, and a disengageable mechanical connection between said plate holdt' and said power actuated member.

2-1. In apparatus for purposes of stereos copy described, the combination with a frame, of a plate holder supported thereby and movable with respect thereto, said plate holder having a side opaque to ordinary light and translucent to X-rays, said frame having panels opaque and translucent to X- rays, an automatic motive device carried by said frame for moving said plate holder with respect to a translucent panel comprising a power actuated member movable longi tudinally of said frame, and a disengageablc mechanical connection between said power actuated member and said plate holder.

In apparatus for purposes of stereoscopy described, the combimttion with a frame, of a plate holder supported thereby and movable with respect thereto, said plate holder having a side opaque to ordinary light and translucent to X-rays, said frame liav ing panels opaque and translucent to X-rays, an, automatic motive device carried by said frame for moving said plate holder with respect to a translucent panel comprising a power actuated member movable longitudinally of said f'ame, a disengageable mechanical connection between said 'power actuated member and said plate holder, and means for retarding the movement of said plate holder near the end of its movement.

In testimony whereof I have hereunto af' fixed my signature in the presence of the two subscribing witnesses.

EDIVIN \V. KELLY. \Vitnesses ELEANOR T. MCCALL, A. E. STLINBOCK, 

